When BC was updated from 25.0 to 25.1 I encountered massive performance issues for a simple vendor query. I found out that the reasons are the FlowFields Debit / Credit Amount incl. LCY versions on the vendor table. The only change I found in the source was, that MS added SumIndexFields definition for the fields in the Detailed Vendor Ledger Entries at Key 12.
Honestly, I do not understand why it slows down now. And what can I do in my Query?